////////////////////////////////////////////////////////////////////////////////
// The Loki Library
// Copyright (c) 2006 Richard Sposato
// Copyright (c) 2006 Peter K�mmel
// Code covered by the MIT License
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
////////////////////////////////////////////////////////////////////////////////
#ifndef LOKI_REFTOVALUE_INC_
#define LOKI_REFTOVALUE_INC_

// $Id$

namespace Loki {

////////////////////////////////////////////////////////////////////////////////
///  \class RefToValue
///
///  \ingroup SmartPointerGroup
///  Transports a reference as a value
///  Serves to implement the Colvin/Gibbons trick for SmartPtr/ScopeGuard
////////////////////////////////////////////////////////////////////////////////

template <class T> class RefToValue {
public:
  RefToValue(T &ref) : ref_(ref) {}

  RefToValue(const RefToValue &rhs) : ref_(rhs.ref_) {}

  operator T &() const { return ref_; }

private:
  // Disable - not implemented
  RefToValue();
  RefToValue &operator=(const RefToValue &);

  T &ref_;
};

////////////////////////////////////////////////////////////////////////////////
///  \ingroup ExceptionGroup
///  RefToValue creator.
////////////////////////////////////////////////////////////////////////////////

template <class T> inline RefToValue<T> ByRef(T &t) { return RefToValue<T>(t); }

} // namespace Loki

#endif // end file guardian
